I bought the huge package of items in the sale.
The new Medic crossbow is theoretically interesting, but I doubt it's got much practical use. It's supposed to heal team mates it hits, so it's supposed to be used to heal team mates out of medigun range. However, the crossbow bolts are slow, fly in an arc, and you only get one shot before you have to reload, so it's only ever going to be useful for the most crazy-ass skilled medics.
The new Demo melee weapon explodes on the first hit, damaging both you and the enemy. I suppose this could be used as a mutually-assured destruction weapon, but you've got your grenade launcher for that. The new grenade launcher does more damage and has faster flying grenades, but it only has a 2 shot clip, and the grenades don't bounce off walls (they disappear without doing damage instead). This would only be useful in the hands of a very skillful Demo, I think (ie, not me).
The new Heavy minigun doesn't feel very different from the other miniguns, to be honest. Actually, since it slows you down more and takes longer to spin up, using it kind of feels like playing Heavy pre-buff. The new meat and gloves weapons are huge jokes, though, for a serious player.
Also, the Black Box is one overpowered rocket launcher.
EDIT: Apparently Medieval Mode is where you can only use items that appear to have a medieval theme. Stuff like the Eyelander, the new crossbow, the Sniper's Huntsman etc. When they said you can only use olde weapons, I thought they meant the old default loadouts - which, now that I think about it, might actually be a viable game mode to add to the game.
